Increase MSRV coverage for supported platforms in CI #56

Job	Run time
cargo-deny (advisories)	19s
lint	30s
cargo-deny (bans licenses sources)	18s
aarch64-unknown-linux-gnu / build	42s
aarch64-apple-darwin / build	39s
aarch64-apple-ios / build	1m 35s
aarch64-unknown-linux-musl / build	50s
arm-linux-androideabi / build	30s
armv7-linux-androideabi / build	31s
i686-pc-windows-gnu / build	2m 5s
i686-pc-windows-msvc / build	1m 53s
i686-unknown-linux-gnu / build	36s
i686-unknown-linux-musl / build	47s
msrv-aarch64-apple-darwin / build	39s
msrv-aarch64-unknown-linux-musl / build	48s
msrv-arm-linux-androideabi / build	34s
msrv-x86_64-pc-windows-msvc / build	55s
msrv-x86_64-unknown-freebsd / build	43s
msrv-x86_64-unknown-linux-gnu / build	28s
msrv-x86_64-unknown-netbsd / build	33s
x86_64-apple-darwin / build	49s
x86_64-pc-windows-gnu / build	1m 55s
x86_64-pc-windows-msvc / build	1m 46s
x86_64-unknown-freebsd / build	38s
x86_64-unknown-linux-gnu / build	46s
x86_64-unknown-linux-musl / build	44s
x86_64-unknown-netbsd / build	31s
	23m 4s

Provide feedback